This bug was fixed in the package linux - 4.18.0-17.18
---------------
linux (4.18.0-17.18) cosmic; urgency=medium
* linux: 4.18.0-17.18 -proposed tracker (LP: #1819624)
* Packaging resync (LP: #1786013)
- [Packaging] resync getabis
- [Packaging] update helper scripts
* C++ demangling support missing from perf (LP: #1396654)
- [Packaging] fix a mistype
* arm-smmu-v3 arm-smmu-v3.3.auto: CMD_SYNC timeout (LP: #1818162)
- iommu/arm-smmu-v3: Fix unexpected CMD_SYNC timeout
* Crash in nvme_irq_check() when using threaded interrupts (LP: #1818747)
- nvme-pci: fix out of bounds access in nvme_cqe_pending
* CVE-2019-9003
- ipmi: fix use-after-free of user->release_barrier.rda
* CVE-2019-9162
- netfilter: nf_nat_snmp_basic: add missing length checks in ASN.1 cbs
* CVE-2019-9213
- mm: enforce min addr even if capable() in expand_downwards()
* CVE-2019-3460
- Bluetooth: Check L2CAP option sizes returned from l2cap_get_conf_opt
* tun/tap: unable to manage carrier state from userland (LP: #1806392)
- tun: implement carrier change
* CVE-2019-8980
- exec: Fix mem leak in kernel_read_file
* [Packaging] Allow overlay of config annotations (LP: #1752072)
- [Packaging] config-check: Add an include directive
* amdgpu with mst WARNING on blanking (LP: #1814308)
- drm/amd/display: Fix MST dp_blank REG_WAIT timeout
* CVE-2019-7308
- bpf: move {prev_,}insn_idx into verifier env
- bpf: move tmp variable into ax register in interpreter
- bpf: enable access to ax register also from verifier rewrite
- bpf: restrict map value pointer arithmetic for unprivileged
- bpf: restrict stack pointer arithmetic for unprivileged
- bpf: restrict unknown scalars of mixed signed bounds for unprivileged
- bpf: fix check_map_access smin_value test when pointer contains offset
- bpf: prevent out of bounds speculation on pointer arithmetic
- bpf: fix sanitation of alu op with pointer / scalar type from different
paths
- bpf: add various test cases to test_verifier
- bpf: add various test cases to selftests
* CVE-2017-5753
- bpf: fix inner map masking to prevent oob under speculation
* Use memblock quirk instead of delayed allocation for GICv3 LPI tables
(LP: #1816425)
- efi/arm: Revert "Defer persistent reservations until after paging_init()"
- arm64, mm, efi: Account for GICv3 LPI tables in static memblock reserve
table
* efi/arm/arm64: Allow SetVirtualAddressMap() to be omitted (LP: #1814982)
- efi/arm/arm64: Allow SetVirtualAddressMap() to be omitted
* Update ENA driver to version 2.0.3K (LP: #1816806)
- net: ena: update driver version from 2.0.2 to 2.0.3
- net: ena: fix race between link up and device initalization
- net: ena: fix crash during failed resume from hibernation
* Silent "Unknown key" message when pressing keyboard backlight hotkey
(LP: #1817063)
- platform/x86: dell-wmi: Ignore new keyboard backlight change event
* CVE-2018-19824
- ALSA: usb-audio: Fix UAF decrement if card has no live interfaces in
card.c
* CVE-2019-3459
- Bluetooth: Verify that l2cap_get_conf_opt provides large enough buffer
* CONFIG_TEST_BPF is disabled (LP: #1813955)
- [Config]: Reenable TEST_BPF
* installer does not support iSCSI iBFT (LP: #1817321)
- d-i: add iscsi_ibft to scsi-modules
* CVE-2019-7222
- KVM: x86: work around leak of uninitialized stack contents (CVE-2019-7222)
* CVE-2019-7221
- KVM: nVMX: unconditionally cancel preemption timer in free_nested
(CVE-2019-7221)
* CVE-2019-6974
- kvm: fix kvm_ioctl_create_device() reference counting (CVE-2019-6974)
* hns3 nic speed may not match optical port speed (LP: #1817969)
- net: hns3: Config NIC port speed same as that of optical module
* [Hyper-V] srcu: Lock srcu_data structure in srcu_gp_start() (LP: #1802021)
- srcu: Lock srcu_data structure in srcu_gp_start()
* libsas disks can have non-unique by-path names (LP: #1817784)
- scsi: libsas: Fix rphy phy_identifier for PHYs with end devices attached
* Bluetooth not working (Intel CyclonePeak) (LP: #1817518)
- Bluetooth: btusb: Add support for Intel bluetooth device 8087:0029
* CVE-2019-8912
- net: crypto set sk to NULL when af_alg_release.
- net: socket: set sock->sk to NULL after calling proto_ops::release()
* 4.18.0 thinkpad_acpi : thresholds for BAT1 not writable (LP: #1812099)
- platform/x86: thinkpad_acpi: Fix multi-battery bug
* [ALSA] [PATCH] System76 darp5 and oryp5 fixups (LP: #1815831)
- ALSA: hda/realtek - Headset microphone support for System76 darp5
- ALSA: hda/realtek - Headset microphone and internal speaker support for
System76 oryp5
* CVE-2019-8956
- sctp: walk the list of asoc safely
* Constant noise in the headphone on Lenovo X1 machines (LP: #1817263)
- ALSA: hda/realtek: Disable PC beep in passthrough on alc285
-- Kleber Sacilotto de Souza <kleber.so...@canonical.com> Wed, 13 Mar
2019 12:52:13 +0100
** Changed in: linux (Ubuntu Cosmic)
Status: Fix Committed => Fix Released
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-5753
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-19824
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-3459
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-3460
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-6974
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-7221
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-7222
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-7308
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-8912
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-8956
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-8980
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-9003
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-9162
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-9213
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https://bugs.launchpad.net/bugs/1812099
Title:
4.18.0 thinkpad_acpi : thresholds for BAT1 not writable
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Cosmic:
Fix Released
Bug description:
[Problem description]
Kernel 4.17 introduced a new interface to set charge thresholds: The
interface remained unchanged with 4.18. There's a bug preventing writing the
charge thresholds for the secondary battery (BAT1).
[Impact]
ThinkPads with two batteries (ThinkPad "power bridge") e.g.
X240, T440(s), X250, T450(s), X260, T460(s), X270, T470(s) et al.
[Steps to reproduce]
echo 42 > /sys/class/power_supply/BAT1/charge_start_threshold
bash: echo: write error: No such device
echo 42 > /sys/class/power_supply/BAT0/charge_start_threshold
-- primary battery works!
[Fix]
Problem was fixed in 4.19:
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/drivers/platform/x86/thinkpad_acpi.c?h=v4.19.15&id=d22296d9c38fd29a96bb5079fb8d17cee278f40e
I propose to cherry-pick the patch for 4.18.
[Test Case]
See above, a patched 4.18 works for T450s.
[Regression Potential]
Low. This patch only applies to several ThinkPad machines, and after applying
this patch, charge_start/stop_threshold work for BAT0 and BAT.
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